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EO NO G.BROWN JR. <br /> 5 <br /> GOVERNOR <br /> r o g N l• MATTHEW ODRIOVEI <br /> CA <br /> 9ECRETART FOR <br /> Water Boards ENFVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> 9 September 2015 <br /> Mr. Eric Jenks <br /> Wilbur-Ellis Company <br /> Agribusiness Division <br /> P.O. Box 511, Yuba City, CA 95991 <br /> REVIEW OF THE REMOVAL ACTION WORK PLAN, JOHN TAYLOR FERTILIZERS CO. <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> Staff of the California Regional Water Quality Control Board, Central Valley Region (Central Valley <br /> Water Board) have reviewed the Removal Action Work Plan (RAW) dated 2 June 2015, for the John <br /> Taylor Fertilizer (JTF) site, located at 1819 South Argonaut Street in Stockton, San Joaquin County, <br /> California (Site). The RAW was prepared for Wilbur-Ellis Company (Wilbur-Ellis) by Geosyntec <br /> Consultants (Geosyntec) of Rancho Cordova, California. <br /> The RAW provides Site background; nature and extent of chemicals of concern (COCs); risk <br /> assessment summary; removal action goals, removal action technology screening; removal action <br /> alternatives and their evaluation; and details implementation approach and procedure for the <br /> preferred removal action. <br /> The RAW was developed as a result of the 21 August 2014 meeting between Wilbur-Ellis, Geosyntec <br /> and the Central Valley Water Board staff. In the meeting it was decided that the Feasibility Study for <br /> Remediation of Groundwater(FS Report) which was previously submitted on 3 December 2012, <br /> would be put in abeyance, while an enhanced in situ bioremediation (EISB) treatability study and an <br /> update to the potential receptor survey were conducted. <br /> Site Background <br /> Historical records indicate that a retail outlet and distribution center for agricultural chemicals and <br /> pesticides was formerly located at the Site. The Site has been impacted by volatile organic <br /> compounds (VOCs), primarily 1,2-dichloropropane (1,2-DCP) and 1,2,3-trichloropropane (1,2,3-TCP). <br /> To date, remedial activities at the Site have related to the removal of fuel underground storage tanks <br /> (USTs) and the former liquid fertilizer tank farm. Soil investigation began at the Site in 1999 and <br /> several rounds of soil investigation have been completed since then. The nature and extent of soil <br /> conditions has been evaluated and the results of the investigations did not reveal a source. The <br /> extent of COCs in shallow and deeper groundwater has been established and is adequately <br /> monitored through a network of sallow and deep groundwater monitoring wells both on and off-site. <br /> The RAW proposes to target shallow groundwater area at depth from approximately 20 to 28 feet <br /> below ground surface (bgs), and deeper zone from 70 to 105 ft bgs. The RAW evaluates <br /> KARL E. LONGLEY ScD, P.E.,CHAIR I PAMELA C. CREEDON P.E., BCiEE,EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200.Rancho Cordova,CA 95670 1 www.Waterboards.ca.gov/centralvallay <br /> %J RECVCLEO PAPER <br />